14-15 14) Obtain the major product for 1,2- and 1,4-addition reactions (a and b) of conjugated system first and thenillustrate the mechanism via resonance-stabilized allyl carbocations. Also, achieve the major product forthe addition reactions (e and d).1,4-addition ProductMechanism for both product formation via resonance-stabilizedally carbocations(a)HBr50°C1,2-addition ProductHBr-70°C(b)1,4-addition Product1,2-addition ProductH-CI70°CH-Br-60°C(c)(d)15) For all Diels-Alder ([4+2] cycloaddition) reactions, provide the major product with properregioselectivity (1,2-/1,3-/1,4-product) and stereoselectivity (meso/enantiomer and exo/endo)preference. Show arrow pushing for all [4+2] cycloadditions.heatMesoCO, MeheatMesoCNheatRacemicCNCOETheatRacemicČOEE

14) Obtain the major product for 1,2- and 1,4-addition reactions (a and b) of conjugated system first and then illustrate the mechanism via resonance-stabilized allyl carbocations. Also, achieve the major product for the addition reactions (e and d). Mechanism for both product formation via resonance-stabilized ally carbocations 1,4-addition Product (a) HBr 50°C 1,2-addition Product HBr -70°C (b) 1.4-addition Product 1,2-addition Product H-CI 70°C H-Br -60°C (d) (c) 15) For all Diels-Alder ([4+2] cycloaddition) reactions, provide the major product with proper regioselectivity (1,2-/1,3-/1.4-product) and stereoselectivity (meso/enantiomer and exo/lendo) preference. Show arrow pushing for all [4+2] cycloadditions. CO2ME heat Meso

14) Obtain the major product for 1,2- and 1,4-addition reactions (a and b) of conjugated system first and then illustrate the mechanism via resonance-stabilized allyl carbocations. Also, achieve the major product for the addition reactions (e and d). Mechanism for both product formation via resonance-stabilized ally carbocations 1,4-addition Product (a) HBr 50°C 1,2-addition Product HBr -70°C (b) 1.4-addition Product 1,2-addition Product H-CI 70°C H-Br -60°C (d) (c) 15) For all Diels-Alder ([4+2] cycloaddition) reactions, provide the major product with proper regioselectivity (1,2-/1,3-/1.4-product) and stereoselectivity (meso/enantiomer and exo/lendo) preference. Show arrow pushing for all [4+2] cycloadditions. CO2ME heat Meso

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter10: Alcohols

Section: Chapter Questions

Problem 10.52P: Alcohols are important for organic synthesis, especially in situations involving alkenes. The...

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